A247148 - OEIS

A247148

Primes p that divide LS(p), where LS is the "Look and Say" function (A045918).

2, 5, 108947, 4940867

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OFFSET

1,1

COMMENTS

a(5) > 4*10^12. - Tyler Busby, Feb 02 2023

LINKS

Chris K. Caldwell and G. L. Honaker, Prime Curio for 108947

EXAMPLE

a(2)=5, because 5 is prime and divides LS(5) or 15.

CROSSREFS

KEYWORD

nonn,more,hard,base

AUTHOR

EXTENSIONS

a(4) from Alois P. Heinz, Nov 20 2014

STATUS

approved